Highlights

A project to scan a small selection of the film chips of historical earthquake recordings to digital files was started in 1996. In addition to archiving historic data from the early years, the USGS has also worked to archive photos and descriptions of early seismometers.

On 14 February 2017, two small seismic events occurred in proximity to the Oroville Dam in the Sierra Nevada foothills, California. A new report found 19,000 smaller‐magnitude events near the Oroville spillway that were similar to the events and occurred in clusters that strongly correlate with periods of spillway discharge. (SSA news release)